---------------------------------------------------------------------==discussion==An Alberta clipper will combine with a Texas low to bring asignificant snowfall to most of Southern Ontario. Light snow willbegin from west to east Thursday with heavier snow Thursday nightinto Friday.

Current indications are that the highest snow amounts will occurnorth of a line from Grand Bend to Hamilton to Kingston. General snowamounts of 10 to 15 cm are possible with this event.

Lower snow amounts are expected to the south of this line with 5 to10 cm possible. There is also a risk of freezing rain over theWindsor to Chatham areas Thursday evening.

There is still some uncertainty as to the exact tracks of bothLows, which will affect the timing and snow amounts for each region.Environment Canada is monitoring this system closely and will issuefurther statements as necessary.

The public is advised to monitor future forecasts and warnings aswarnings may be required or extended.

High winds, snow and blowing snow for Saturday mainly for the Southeast.

---------------------------------------------------------------------==discussion==Forecast guidance is indicating that a low pressure system near CapeHatteras on Friday will deepen rapidly as it sweeps up the atanticcoast to pass south of Nova Scotia on Saturday then move towardsNewfoundland on Sunday.

This storm will give strong northeasterlies to the southern part ofNew Brunswick, and periods of snow and blowing snow mainly to thesoutheast. It should start late on Friday with most of the snow onSaturday. It is too early for good estimates of snowfall amounts,but some guidance is indicating amounts in excess of 20 to 30centimetres are possible for Southeastern New Brunswick.

Strong northeasterlies and northerlies over the gulf of st.Lawrence may also give higher than normal water levels, and will pushpack ice into north to northeast facing shorelines.

The public is advised to monitor future forecasts and warnings aswarnings may be required or extended.

Please monitor the latest forecasts and warnings from EnvironmentCanada at www.weatheroffice.gc.ca

Snow, blowing snow and high winds are expected Thursday Afternoon and evening.

---------------------------------------------------------------------==discussion==A low pressure system will track towards Newfoundland Thursdaymorning and will rapidly cross the island as it intensifies Thursdayafternoon. A strong cold front will then follow behind it.

Snow will develop ahead of this system near noon Thursday for mostareas of the island and will be followed by strong westerly winds inthe evening. Snowfall amounts are expected to only be near 10centimetres, however the snow will fall over a very short period oftime. Winds are expected to gust near 80 km/hour and there ispotential for gusts up to 100 km/hour. This heavy snow and strongwinds could give whiteout conditions for Central and NortheasternNewfoundland for a few hours late tomorrow afternoon and evening.Meanwhile snowsqualls are expected to develop over the west coast onThursday afternoon and are likely to give whiteout conditions in snowand blowing snow.

The public is advised to monitor future forecasts and warnings aswarnings may be required or extended.

Please monitor the latest forecasts and warnings from EnvironmentCanada at www.weatheroffice.gc.ca

AN ALBERTA CLIPPER CURRENTLY TRACKING SOUTHEASTWARD THROUGH THEDAKOTAS IS EXPECTED TO TRACK ACROSS THE US MIDWEST TONIGHT ANDTHURSDAY THEN TRACK JUST SOUTH OF LAKE ERIE ON FRIDAY. THIS CLIPPERMAY INTENSIFY INTO A WINTER STORM AS IT APPROACHES SOUTHERN ONTARIO.

SNOW AHEAD OF THIS CLIPPER WILL START SPREADING INTO SOUTHERN ONTARIOFROM MICHIGAN AND LAKE HURON ON THURSDAY WITH PERHAPS A COUPLE CM OFSNOW BY THURSDAY EVENING IN A SWATH OF REGIONS EXTENDING FROM LAKEHURON TO WESTERN LAKE ONTARIO.

AS THE CLIPPER GETS CLOSER, LATEST INDICATIONS SUGGEST IT WILLINTENSIFY THURSDAY NIGHT, WITH AN EXPANDING AREA OF HEAVY SNOWEXPECTED TO MOVE INTO MOST OF SOUTHERN AND PARTS OF EASTERN ONTARIO.SOME FREEZING RAIN AND ICE PELLETS ARE POSSIBLE OVER THE EXTREMESOUTHWEST.

SNOW, HEAVY AT TIMES IS EXPECTED TO CONTINUE WELL INTO FRIDAY AS THESTRONG CLIPPER SAILS BY JUST SOUTH OF THE GREAT LAKES.

MANY PARTS OF SOUTHERN AND EASTERN ONTARIO MAY RECEIVE 15 CM OF SNOWFROM THIS STORM BY FRIDAY EVENING. SOME AREAS MAY RECEIVE HIGHERAMOUNTS, WITH 25 CM NOT OUT OF THE QUESTION. THIS WILL DEPENDON THE EXACT TRACK AND INTENSITY OF THIS LOW, AND ENHANCEMENT INTHE COLD EASTERLY FLOW OFF OF LAKE ONTARIO FOR EXAMPLE. TOTAL SNOWAMOUNTS MAY BE SOMEWHAT LOWER OVER THE EXTREME SOUTHWEST DUE TO SOMEFREEZING RAIN AND ICE PELLETS.

BRISK EASTERLY WINDS WILL ALSO RESULT IN BLOWING SNOW IN MANY AREASTHURSDAY NIGHT AND FRIDAY.

TRAVELLING CONDITIONS WILL DETERIORATE AND BECOME HAZARDOUS IN THESNOW AND BLOWING SNOW THURSDAY NIGHT AND FRIDAY. THERE MAY BE ASIGNIFICANT IMPACT ON THE COMMUTE TO WORK ON FRIDAY MORNING ANDPOSSIBLY FRIDAY AFTERNOON IN HEAVY SNOW AND BLOWING SNOW.

THERE IS STILL SOME UNCERTAINTY AS TO THE EXACT TRACK AND INTENSITYOF THE LOW, WHICH WILL AFFECT WHERE THE HEAVIEST SNOW FALLS. HOWEVERTHE MANY OF LATEST COMPUTER MODELS HAVE CONTINUED TO SUGGEST A MOREINTENSE VERSION OF THIS WINTER STORM IS POSSIBLE.

ENVIRONMENT CANADA IS CLOSELY MONITORING THIS SITUATION. THEWINTER STORM WATCH MAY BE EXPANDED FURTHER TO THE NORTHEASTAS THE EVENT DRAWS CLOSER. WARNINGS MAY ALSO BE ISSUED FOR MANYREGIONS AS WELL.

Snowstorm from Southern Ontario to Atlantic CanadaFebruary 06, 2013; 5:42 PMVery busy day here today in the office doing snow warning. I have found some time to issue my thoughts on snowfall.We favor a blend of the GFS and the ECMWF model for this storm. The expected track of the initial, primary storm is quite favorable for significant snow across southern and eastern Ontario before it gets absorbed by the coastal storm.Heaviest snow for the GTA will be late Thursday night into midday Fri, then lighter in the afternoon.Heaviest snow for southern New Brunswick, through PEI and Nova Scotia will be late Friday night into Saturday with blizzard conditions.This storm should be all snow for Canada, though a little mixing initially near Windsor.Sarnia, Ont....10-20 cmWindsor, Ont....6-14 cmLondon, Ont....10-20 cmSt. Catharines, Ont.....10-20 cmHamilton, Ont.....15-25 cmKitchener, Ont.....15-25 cmBrampton/Toronto, Ont.....20-28 cmBarrie, Ont.....20-25 cmBracebridge, Ont....8-12 cmPeterborough, Ont....20-28 cmKingston, Ont.....15-25 cmCornwall, Ont....12-22 cmOttawa, Ont.....10-20 cmMontreal, Que....10-15 cmPembroke, Ont....6-12 cmSherbrooke, Que....6-12 cmQuebec City....2-5 cmSouthwest Nova Scotia.....25-35 cmMuch of the rest of Nova Scotia, southern new Brunswick and the eastern two thirds of PEI....20-30 cmFredericton, NB.....10-20 cmMoncton, NB......18-25 cmBathhurst, NB.....4-8 cm